Pasteboard-box-making machine



Dec. 6, 192 7.

A. J. EVERS PASTEBOARD BOX MAKING MACHINE Filed Sept. 25. 1926 6 Shee ts-Sheet 1 Dec. 6, 1927.

A. J. EVERS PASTEBOARD BOX MAKING MACHINE e Sheets-Sheet 2 Filed Sept.25. 1926 Dec. 6, 1927.

A. J. EVERS PASTEBOARD BOX MAKING MACHINE Filed Sept. 25, 1926 6Sheets-Sheet 3 Dec. 6, 1927. 1,651,877

A. J. EVERS I PAS'I'EBOARD BOX MAKING MACHINE Filed Sept. 25. 1926 SSheetS-Sheet 4 Dec. 6, 1927;

1,651,877 A. J. EVERS PASTEBOARD BOX MAKING MACHINE Filed Se 1:. 25.1926 6 Sheets-Sheet s Dec. 6, 1927.

A. J. EVERS PASTEBOARD BOX MAKING MACHINE Filed Sept. 25, 1926 Illl "Ill

// llllll 6 Sheets-S heet 6 Patented Dec. 6, 1927.

tit-T sr 7 i teeter;

ARTHUR J. Evans, or oizioaeo; IL'Ibiitois', ass'len'on ro slats nooirrrteineonmn con- PANY, OF CHICAGO, 'ILLINoIs,

AsTEBOARD-sOXeMAKING MACHINE. 7

Application filed September 25, 19 26. serial No. 1 3'7, G55.l

My invention concerns 'ce tain features of novelty and advantage, bothstructural and functional in pastehoardbox manufacturing machines andsimilar appliances.

One aim of the invention is the produc tion of a machine of thistypewhich is simple in structure, easily operated, and coinparativelyeconomical to produce, whereby the manufacturer of the goods tobeaccolninodated or shippedin the boxes can with advantage have one ormore of the machines producing boxes in his plant, rather than buy theboxes already niade, which necessitates much space for their shipment,from the 'nianutacturingestablishment and which does away with foldingboxes which have several unsatisfactory characteristics" 7 .Vith thisgeneral object in view, the nachine has been designed to meettheparticular needs of the service which it is intended to perform andwhich will be made clear from the following detailed description of apreferred embodiment of the invention which has also beenillust-ratediin tlie severalviews of the accompanying drawingsconstituting a part of this specification and throughout thepluralityvof views jofwhich like refer ence characters have beeneinployed'to desig nate the same parts. 1

In these drawings: 7 it p I Figure 1 is a front elevation of the newmachine; v I i Figure 2 is an enlarged, vertical cross-see; tion on line22 of Figure 1;

Figure 3 is a top plan view of the mechanism; I v

Figures 4, 5 and 6 illustrate the pasteboard blank and the foldingoperations performed thereon; I I liigure 7 is a vertical cross-sectionon line 77 of Figure 3; v

Figure 8 is a similar section on line 8-8 of Figure 3; 1 I t;

Figure 9 is a cross-section through the friction-clutch and brakeappliance on line 9-9 of Figure 10; 1 t

Figure 10 is a longitudinal section through theback cam shaft; v a i vFigure 11 is a crosssection on line 11-11 of Figure 10; g

Figure 12 is aperspective view of one of the devices for applyingadhesive to the blanks; and

Figure 13 is a perspective view of the rubrapplying device. p J, -Byreference to these drawings,*it will. be

23 secured to. a vflatilhorizontal surface. of

the fran'ie by a plurality ofgscrews 24 24, Figure 8, and on a pair ofend-blocks25, 25, each being adjustably. fastened on the same flatsurface of the inain-franie abort/26 extended upwardly through a slot 27iii the block and having its-head in annndercut groove 28 of the,fra1ne, Figures2Iand7.

Obviously, the former or forni block '22: may be easily replaced byaiiother ofldifferent size when required for the nianufactureof boxesofl other dimensions.

her or flexible coinb for wipingthe adhesive Y lVhen one endfofthescoredandcutp a'ste- 1 board blank 29is j applied finaniia'lly to thefo11n-block, its side-wings: '31, {31ers bent along the parallelfoldinglin'es 32,32arid the 7 two end ears or flaps 33,33 onefend of theblank are folded overby' hand leaving the corresponding, intermediate,end flap 134i standing upright asshowniin Figures 2, '3

Tand 8. y Y a L When such blank is thus folded and 'applied by hand totlieQforni-block, the sidewings 31 31 are insertecl.'-between'the oppo}site sides of the forni-jhlock andslig'htlyflaring leaf-springs 35,3.5{iiiounted thereon, the springs performing the function of retainersto hold the bent wings in position againstthe fac'soffthe forin. Q

Also,fwhen' the bent blank is thus :pla c ed onthe forin, the inneredges of the pair of oppositely dispos'ed earsor tabs 33, 33"a reintroduced beneath springs 86 '86 mounted on and projectingforwardly-fro a-stripper-bar 37..

Hence n1 6f the hand-bent We eat blanks are properly'held inputs againstthe sure for a. suitable, length oftime to the then superposed SBCtlODSfOf the box blank to obtain their iirin and secure adhesion, and thentodischa-rge or strip the box fromtlie jforin,

whereupon the .opposite end of the blank is treated in the same mannerto complete the finished box.

To perform these adhesive-applying,wingfoldinmand pressing andbox-discharging pan 41 is provided to containthe supply of adhesive,such as paste or glue;

Above this, a bar 42 has its rear end fixed- 1y mounted in a socket ofan arm 43 (Fig ure 8) whose hub 44 (Figure is rockingly mounted ona'sliaft 45 suitably supported in theframe, such rock-arm having aroller 46 cooperating with a cam 47 mounted on a rotary shaft 48revolved by means hereinafter described.

Bar '42 acts as a support or guide for a carriage 49 sli'dablelengthwise thereon and carrying a cross-bar 51 on which are adjustablymounted two, adhesive-applying blocks 52, 52 in register with thebent-over tabs 33, 33 on theform-block.

, Each such member 52 has on its under face a plurality of grooves 53,53 with blade-like projections 54, -54 between them (see Figure 12), thebottom faces only of the blades being used to carry the adhesive to andapply it to the blank tabs 33, 33.

i 'As will be explained hereinafter, a rubber or other flexible comb 50is so positioned and shaped as to wipe all of the adhesive off of suchblock except that present on the under faces of the blades. 7

The reciprocatory block or carriage 49 is connected by a bent link 55 tothe lower end of a bentlever 56 fulcrumed on the inside of the frame at57, the member 56 having a roller 58 in a cam groove 59 in the sideof acam 61, the hub 62 of which is pinned to and rotatable with thecam-shaft 48.

From the above, it will be clear that cam groove 59 causes the forwardand back movement of the adhesive appliers 52, 52 and that cam groove 47requires such members to rise and descend as is needed to permit them toenter and leave the adhesive vessel 41 and to deposit the transportedadhesive on the folded blank tabs and not wipe it off on receding fromthem Turning now to the mechanism for folding over the blankwing 34 onto the coated corner tabs 33, 33 and for pressing it firmly on to themto insure proper adhesion of the parts together, it will be seen thattwo, vertical, cylindrical guides 63, 63 depend from a front, top,overhanging part 64 of the machine frame and that on these a carriage 65is adapted to slide vertically, the reciprocation thereof being effectedby a toggle 66, 67 the lower link 66 of which is rockingly first to themeans for applying regulated and the machine adjusted with facility foruse withstock of different dimensions orethicknesses.

Such toggle is actuated by means of a link 71 connected to its knee andto a rock-arm 72 whose hub 73 is fulcrumed on shaft 45, the arm beingequipped with a roller 74 in a cam groove 75'of cam 76 pinned on shaft48.

- Carriage 65 has a presser 77 hinged there to orrocklnglymountedthereon, so that during its turning action, it may foldor bend over the flap 34 and by bodily downward travel, produced by thetoggle, it may apply proper pressureto obtain the required cementing ofthe box blank parts together.

Such prcsser has an arm78 integral there with or fixed thereon and theend of such arm is connected by a link 79to the lower end of a curvedarm 81 whose hub 82 is fulcrumed at 83 on the frame, an intern'iediatepart of such rock-arm having a roller .84 in a cam groove 85 in one'faceof cam 7 6 hereinabove referred to.

The one cam rocks'the presser and the other forces it down, after havingbeen 89, 89 on a rock-shaft'91 appropriately jour naled in themain-frameand having a level or arm 92 secured thereto (Figure 8) the lower end ofwhich is connected by a link 93 to the bottom end of a lever 94fulcrumed on shaft 45 and the top end of which has a roller 7 I 95 in anouter cam surface in one side of cam 61.

This stripper-bar is adjustable as to its intermediate position but notas to the total length of its stroke, so that it can be readily usedwith boxes of different sizes,

To this end, the upper part of arm 92 has a double-flaring socket member97 of external ball shape through which a rod 98 extends, the latterbeing fitted with two collars 99 and 101 fixed thereon, and betweenthese collars and two washers 102, 102 bearing on opposite sides of theglobular-shaped socketed part 97 of the lever are two coiled springs 103and 104 enclosing the rod and hearing at their opposite ends on. thecollars and washers respectively. I

These two springs are always exactly balanced and the position of thestrippenbar and adju'stably slidableon the top face of the baseofele'm'ent 23 (Figure 8), a screw 10? having threaded engagement with ascrew-threaded hole through the block, the screw having an unthreadedsection 108 revoluble in a bearing in block 23 and prevented fromlengthwise movement therein by confining collars 109 and 110, the frontprotriiclii'ig end of the screw-shaft being transversely slotted for theaccomniodatio'n of theend 'of a screw-driver.

Hence, by turning screw 10?, the position of the stripper-bar mayjbeadyusted to conform to the different sizes of box blanks.

This action is permitted becauseth at portion of the cam Q IOQX'e inwhich roller is located when the stripper is idle, is sufficiently wideor wholly omitted to permit such adjustment, but the stripper will al.-

ways travel the'same distance regardless of its adjustment. 7 i

Considering now the driving mechanlsm which is somewhat peculiar becauseit is automatically thrown out of action for a period of time while thepresser is holding the parts of the box blank firmly together,

it will be noticed that an electric-motor '111' on'top of the frame,- bymeans of gear ng l Shaft 114: carries a sliding, toothed clutchelement123 with a key or spline connection 124 between them and adapted forcoactive relation with its companion, toothed clutchmember-125 fixed toa pinion 126' and both freely rotatable on the shaft.

Pinion 126 is in mesh with a small gear 12? below it (Figure 11) and thelatter in turn drives a large gear 128 free to rotate on the endportion'o f shaft 4L8 (Figureltl),

such gear on its inner surface having an.1nterrupted cam rib 129and'within it asuitably mounted roller 131.. I 3

' A split, and therefore angularly adjustable, cam 132 is carried on thehub of gear 123 (Figures 10 and 11).

The slidabl'e clutch-member 123 is adapted I to be shifted intoc'oaetive gelation with its complementary clutch-element 125 by a beltcrank yoke 133 fixed on rock-shaft 13 1 journaled in the frame andhaving a'downwardly-extended arm 135 (Figures 1 and 2) carrying a roller136 which occupies thegap or space in the chin rib 129 wlien' clutch'123-125 is separated.- or inoperative, but Y v. g V which isautomat1cally IQIHOVOClJil'ODl the cavity to ride on the edge of the camrib as its part 123. i

' 0 1 l the edge of the cam rib din-in the turning or rotation thereof,theclutch elements will beheld together incoop erative. or active relajtiombut when the gap or, space in the cam rib comes again intoregisterwith the roller,

soon as the-clutch is made activejbyjsliding 1 the clutchwillbeautomatically renderecl"inoperative.

Clutch 123125 is shifted into action by the follox'ving'specitiedcooperating i'ne'cl anical; parts.

The bell-crank clut'cl1-yol e 133 is joined,

by a link 137 to a lever 138 loose on a shaft 139 and having aforwardly-extended handle 141, whereby, if the handle is permitted to beand is, depressed, the clutch will be made operative, r

Shaft 139, at the other sideof the frame, (,Figurel) is equipped withasimilar forwardly-projecting handle 142 by means of Q, therefore, asthis roller travels on,

which the shaft may be rocked manually, i,

such shaft having an arm 143 (Figure 2) fixed thereon so as to turn withthe shaft, the arm being connectedby a ,l'inkl l-{l to'one arm" of abell-crank 1 15 fulerunned on the frame at 11 6, the otherbell-crank arm-be 'ingpivo'tally connected "to a slotted link 1 11', the slot ofwhichvreceiv'es the 'jiiivot-pin 14:3

joining the parts 137 and-1 38, a coiled co ntra ct'ile spring 1 19being fastened at one end to the frame and at its opposite end to theslotted link, another spring 151 being secured to arm14=3 and .to theframe, a stop or abutment on the frame and PlOjCtlllg into thepath ofmovement of arm 14:3 limiting the turning movements of the elementsiii-.

volved." v 1 y,

VVhenIthe clutch is in inoperative- P2Sltl0ll or eondition, the link 117 and its arm ofthe bell-crank 145 are slightly beyond center in whichposition they are held by the springs and they act as a lock to preventthe-manual depression of handle 1 11. p

In order toclosethe clutc'lnit is necessary to push down bothlevers orhandle'ssimultaneously which assures that both hands of the operator arerequiredffor this ELCtlOli and hence prevents the latter from havingeither hand where it willbe injured or squeezed duringthe starting ofthe'machine.

Then the handle 1412 is pressed down, it swingsfthe locking toggle'llT,145 back slightly beyond'center, thus unlockingand releasing lever13-8,the depression of whose handle 141 slides the clutch into operativerelation.

A very slight movement of handlef142 is suflicient for this purposea'ndthe more substantial clutch-actuating operation is carried out bythe movement of the other handle 141.

Gear 118 has within its round side drum or flange 153 a pair ofsemi-circular combined friction clutch and brake elements 154, 155(Figures 9 and 10) hinged at 156 on a pin whose head 157 is in a slot158 in an angular arm 159 forming part of collar 161 keyed or otherwisefixed to the cam-shaft 48.

lVhen this clutch is active, gear 118 revolves shaft 48 through its drum153, the then-expanded clutch-members 154, 155, arm 159v and collar 161.I

Asis shown in Figures 2, 3, and 9, the

parts 154 and 155 are normally held concontract, they actasbrake-elements bearing on the periphery of a disc 166 forming part ofthe stationary sleeve 121 and tend to 'quickly stop the rotation ofshaft 48 under such circumstances. 7 p

This friction clutch may be madeoperative by turning a short shaft 167mounted in the collar 161 and having a reduced end 168 of the shapeshown in cross-section in Figure 9 between the slightly-separatedadjacent ends of the semi-circular clutch-parts 154 and 155 which arespread apart by such shaft section against the action of the springs,

hence causing them to frictionally grip the inside of the gear drum 153.

Shaft 167 has loosely mounted thereon the two separated legs of a yoke169 (Figures 2, 3 and 10), and has fixed thereon an arm 171 providedwith an adjustment screw' 172 througha threaded hole in the arm 171 andbearing on the yoke, whereby the latter may be said to be fixedadjustably to the shaft, whichit adapted to turn to control. thecondition of the clutch.

Yoke 169, at one end, has a roller 173 designed to coact with a curvedprojection 174 on the side of a lever 175 (Figure 11) fulcrumed at 17 6on a stationary bracket 177 depending from the frame of the machine,such lever being in the path of travel of, and hence designed to berocked upwardly by, the roller 131 on gear 128.

Yoke 169 at its other end has a roller 178 which rides on a stationarycam 179 forming part of the fixedsleeve 121, such cam having. twodepressions or gaps 181 and 182 into either of which the roller may dropand in so doing throw out the clutch and put on the brake automaticallyby reason of the springs 162, 162.

Operaticn-.-Assuming that the operator has taken a box-blank 29 andfolded over the side-wings 31, 31 and bent over the end flaps 33, 33 andapplied such blank to the formblock'so that the springs35 and 36 holdthe bent sections of the form, then he simultaneously depresses bothhandles 141 and 142 and thereby shifts the rotating clutch element 123into engagement with its companion part 125, thus causing the rotationof gear 128. g V i Clutch 123125 is maintained operative for onecomplete revolution of gear 128 and its cam-rib 129, because,as soon asthe clutch is 'made active, it is automatically held in that conditionfor the specified period by the riding of roller 136 on the edge. ofrib129.

Stated otherwise, the clutch cannot be thrown out of action until thegap in the rib again comes into register with the roller, whereuponthelatter enters such space under the action of springs 149 and 151 andthrows the clutch out of operation.

During the rotation of gear 128, roller 131 lifts'lever 17 5 and thelatter, through roller 17 3, rocks yoke 169 and its shaft 167, thereby sreading apart'the hinged clutch-members 154 and 155 into frictionalengagement with tile inner surface of drum 153 of gear 118, whereby thelatter, which is constantly rotating, revolves cam-shaft 48 through theclutch and collar 161, which, with its yoke, rotates the shaft. I

The adhesive appliers advance in a straight line, during the'rotation ofshaft 48, being fully wiped by the resilient comb which leaves adequatematerial on the bot tom faces of their spaced blades, all other adhesivebeing scraped ofi, until they come over the flaps 33, 33, whereupon theydescend by reason of the rocking of bar 42 and deposit their charges ofadhesive in narrow, parallel strips on the top surfaces of such flaps.

Then the adhesive appliers ascend and rctreat at a higher elevation toescape the rubber wiper on such back stroke.

Now the presser 77 rocks or turns down folding the flap 34'down over theunderlying wings or cars 33, 33, and, thereupon, the toggle comes intoaction to force the presser down vertically with full pressure on thepart 34 to cause its secure adhesion to the coated sections 33, 33.

The stripper-bar'recedes just in time to avoid conflict with any of theother mechanical elements and of course its holding function under thosecircumstances need be no further prolonged.

lVhen the presser reaches its fully depressed position, roller 17 8enters the cavity 182 allowing yoke 169 to rock sulliciently to releasethe friction-clutch 153, 154, 155 and automatically apply the brake 154,155, 166,

so that cam-shaft 48 stops with the presser down exerting its full forceon the flap 34.

This pressing of the box parts together, to

"assure their full and complete adhesion, continues with shaft 48statio-nar until cam I32 litts lever 175 and rocks the yoke 169 upwardlyto take ofi the brake and render the friction-clutch active again. I

Cam 132 is 01" sufiicient size or width to iold the yoke 169 elevateduntil roller 178 has passed beyond therecess l82,whereupon the clutch isheld or. maintained inopcration by roller 1'18 traveling on thestationary cam 179 untilit reaches cavity 181 from which it started,and, upon entering such depression, the clutch is thrown out ofoperation and the brake again set into action, the machine then havingcompleted its single cycle of operation.

It may be noticed that for each such cycle .of operation of themechanisnngear 128 shaft, after its period of idleness, the press makesone complete revolution and shatt't8 completes one, interrupted, singleturn, but at different speeds, because of the diiterenc'es in the sizesof the gears 117, 126 and 127.

During the partial rotation of the cam the next blank or the oppositeend of the same blank under consideration.

It will be observed, that the machine acts on only one end of the blankat a time and that the latter has to be reversed byhand in order thatthe other end maybe formed and secured in shape.

By adjusting the angularposition of cam 132 on. the hub of gear 128, thelength of the period that the presser acts on the flaps may be varied asrequired, because the location of such cam determines the length of timeof idleness of the cam-shaft 48. the beginning of such period beingfixed by the definite location o'tcam cavity 182.

Those skilled in this art will readilyunderstand that the invention isnot limited and restricted to the precise and exact mechanical detailsillustrated. and described and that the invention is susceptible ofincorporation in several dtferent physical forms all embodying thefundamental prin ciples of the invention, or, stated somewhatdifferently, many minor mechanical changes may be made in the' mechanismpresented without departure from the heart 'and essence of the inventionas defined by the appended claims, and without the loss of any the i ofthe-material benefits and advantages of the I'DVQDtlOll; v I claim:

which thebox-blank is adapted to be toldcd,a presser constructed to movetoward;

and tromvsaid tornrblock to, press and secure together.adhes1ve-coatedparts of the box-blank, means to actuate said presser in- -'clud1ng aclutch, and means to throw said clutch out of actionautomaticallytemporarily with the presser in position squeezmg saidbox-parts together.

2. In a pasteboard,boxemaking machine, O

the combination of a i":orm-blor.:k about .which the box-blank isadapted to be tolded,a presser constructed to move" toward and from saidform-block to press and se-- cure together adhesive-coated parts ofthebox-blank, means to actuate said presser including a toggle and aclutch, and means to throw said clutch automatically tempora.

1. In a pastebo'ard *boxunaking machine, combination of l a. form-blockabout I the combination of a form-block about.-

which the box-blank is adapted tobe folded, a presserconstructed-to movetoward and from said form-block to press and secure'togetheradhesive-coated parts 01" the box-blank, means to actuate sald presser1nclu ding a clutch, a brake for said actuating means, and automaticmeansto throw said clutch out of action temporarily and apply. thebrakefwith the presser in positio squeezing said box parts together. 4.In a pasteboard box-making machine, the combination o1. a form-blockabout which the box-blank is adapted to be tolded, a presser constructedto move toward and from said form-block to press and se-' cure togetheradhesive-coated parts 01113116 box-blank, means to actuate said presserin cluding a first clutch, means to throw said clutch out of operationautomatically with the presser in position squeezing such box partstogether, means including a second clutch to restore said first clutchto operative condition after a period of time, means to render bothclutches inoperative when the machine has completed its cycle of opera-'tions. i g Y e 5. In a pasteboard box-n'iakingmachine, the combinationof a torm-block' about which the "box-blank is adapted tobe tolded, astripper designed to discharge the box from said. form-bloclnmeans toactuatesaid stripper to discharge the box, andmeansj to t I adjust theposition of said stripper without modifying thelength or position of itsdischarging stroke.

6. In a pasteboard boxanaking machine, 7

the combination of a form-block about which the box-blank is adapted tobe foldsaid, stripper to discharge thebox, and adjnstable balancedsprings determining the original position of said stripper.

7. In a pasteboard box-making machine, the combination of a form-blockabout Which the box-blank is adapted to be folded, a stripper designedto discharge the box from said form-block, means to operate saidstripper including a rock-shaft, an

apeltured arm rigid With said shaft a rod extended through the apertureof sald arm,

balanced springs around said rod hearing at 15 their ends on oppositesides of said arm and In Witness whereof I have hereunto set 20 my hand.ARTHUR 'J. EVERS.

